The results show that transverse magnetic field can refine the primary crystallization structure by electromagnetic stirring and improve the ultimate strength and hardness of the welded joint.
结果表明，通过外加横向磁场对熔池进行搅拌，可以使焊缝晶粒得到细化，进而使其抗拉强度和硬度等力学性能得到改善；
According to the primary procedure of the formation of microcrystalline starch, the preparation methods were classified as retrogradation, hydrolyzation and crystallization.
微晶淀粉的制备方法按生成微晶的主要步骤可划分为回生法、水解法和结晶法三类。
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